Preview Tool

Cisco Bug: CSCup12730 - MK2 :Traffic drop seen over 15 sec on sso

Last Modified

Feb 26, 2018

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)


Local MPLS labels change after an SSO causing a traffic drop a for 
short period of time.


The symptom is observed when LDP graceful restart is configured 
and SSO is supported on the platform. Only the prefixes which have a local label but not a remote label before the SSO are affected. After SSO, these prefixes get assigned a new local label. The traffic should recover once the LDP neighbors learned the new labels.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.